{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T13:57:47Z","timestamp":1787320667430,"version":"build-2736575974"},"reference-count":27,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2023,3,1]],"date-time":"2023-03-01T00:00:00Z","timestamp":1677628800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Contact Dermatitis"],"published-print":{"date-parts":[[2023,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Photopatch testing has been standardized for diagnosing photoallergic contact dermatitis but is still infrequently used.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>To characterize photopatch test (PPT) results and their clinical relevance.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We collected retrospective data from patients photopatch tested in our Dermatology Unit (2010\u20132021), using the European PPT \u2018baseline\u2019 series, other allergens, and patient's own products, when appropriate.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Out of 223 patients, 75 patients (33.6%) were reactive with 124 positive PPT reactions, considered relevant in 56\/223 patients (25.1%) and in 72\/124 reactions (58.1%). Most reactions were caused by topical drugs (\n                      <jats:italic>n<\/jats:italic>\n                      \u00a0=\u200933; 45.8%), such as ketoprofen or promethazine, and 7 (9.8%) by systemic drugs, such as hydrochlorothiazide and fenofibrate. \u2018Classical\u2019 ultraviolet filters were responsible for six positive PPT reactions whereas there was only three relevant PPT to the \u2018newer\u2019 UV filters. Patients' sunscreens\/cosmetics or plant extracts caused 10 positive PPT each. Additional patch test reactions were observed, mostly to Tinosorb\u00ae M.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Contrary to the trend in ACD, most positive PPT reactions were caused by topical drugs, outweighing ultraviolet filters and cosmetics. We stress the low reactivity to the \u2018newer\u2019 UV filters included in the PPT series. PPT was occasionally positive in systemic drug photosensitivity, but overall PPT reactivity was low.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/cod.14297","type":"journal-article","created":{"date-parts":[[2023,2,20]],"date-time":"2023-02-20T12:51:04Z","timestamp":1676897464000},"page":"438-445","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Shedding a light on the importance of photopatch testing: A 12\u2010year experience in a dermatology unit"],"prefix":"10.1111","volume":"88","author":[{"given":"Carlos","family":"Code\u00e7o","sequence":"first","affiliation":[{"name":"Occupational Medicine Instituto Portugu\u00eas de Oncologia  Coimbra Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1614-5354","authenticated-orcid":false,"given":"Pedro Botelho","family":"Alves","sequence":"additional","affiliation":[{"name":"Allergy and Clinical Immunology Unit Centro Hospitalar Universit\u00e1rio de Coimbra  Coimbra Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana Carolina","family":"Figueiredo","sequence":"additional","affiliation":[{"name":"Dermatology Unit Centro Hospitalar e Universit\u00e1rio de Coimbra  Coimbra Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Duarte","family":"Flor","sequence":"additional","affiliation":[{"name":"Dermatology Unit Centro Hospitalar e Universit\u00e1rio de Coimbra  Coimbra Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6842-1360","authenticated-orcid":false,"given":"Margarida","family":"Gon\u00e7alo","sequence":"additional","affiliation":[{"name":"Dermatology Unit Centro Hospitalar e Universit\u00e1rio de Coimbra  Coimbra Portugal"},{"name":"Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine University of Coimbra  Coimbra 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